| Abbreviation | Definition |
|---|---|
| MNEFF | Minefinders Corporation, LTD. |
| MNGX | Mangosoft, Inc. |
| MNHC | Marin Holding Corporation |
| MNIG | M N I Group, Inc. |
| MNMD | Minimed, Inc. |
| MNMM | Mines Management, Inc. |
| MNNSY | Mannesmann, A. G. |
| MNPI | Microcom, Inc. |
| MNRO | Monro Muffler Brake, Inc. |
| MNRTA | Monmouth Real Estate Investment Corporation Class A |
| MNTCF | Mirtronics, Inc. |
| MNTG | M T R Gaming Group, Inc. |
| MNTR | Mentor Corporation |
| MNTTE | Montt International Corporation |
| MNTX | MinnTech Corporation |
| MNYPV | I F S International, Inc. |
| MNYWV | I F S International, Inc. |
| MOAK | Oak Tree Medical Systems |
| MOAT | Castleguard Energy, Inc. |
| MOBI | Mobius Management Systems, Inc. |